Merge pull request #987 from gridap/fixes_evaluation_cellstate

Fixes evaluation cellstate

src/CellData/CellFields.jl

@@ -57,6 +57,13 @@ function get_cell_points(trian::Triangulation)
   CellPoint(cell_ref_coords,cell_phys_coords,trian,ReferenceDomain())
 end
 
+function Base.:(==)(a::CellPoint,b::CellPoint)
+  a.trian == b.trian &&
+  a.cell_ref_point == b.cell_ref_point &&
+  a.cell_phys_point == b.cell_phys_point &&
+  a.domain_style == b.domain_style
+end
+
 """
 """
 abstract type CellField <: CellDatum end

src/CellData/CellStates.jl

@@ -52,8 +52,10 @@ end
 get_triangulation(f::CellState) = get_triangulation(f.points)
 DomainStyle(::Type{CellState{T,P}}) where {T,P} = DomainStyle(P)
 
+_get_cell_points(a::CellState) = a.points
+
 function evaluate!(cache,f::CellState,x::CellPoint)
-  if f.points === x
+  if f.points == x
     f.values
   else
     @unreachable """\n

test/CellDataTests/CellStatesTests.jl

@@ -58,4 +58,16 @@ r = r1*r2*h
 #using Gridap.Visualization
 #writevtk(x,"x",cellfields=["f"=>f,"g"=>g])
 
+# Test for evaluating operations involving cellstates
+model = CartesianDiscreteModel((0.0,1.0,0,1.0,0,1),(2,1,1))
+Ω = Interior(model,[1,2])
+Γ = Boundary(Ω)
+dΩ = Measure(Ω,0)
+dΓ = Measure(Γ,0)
+a = CellState(1.0,dΩ)
+b = CellState(1.0,dΓ)
+id(z)=z
+@test sum(∫((id∘a))dΩ) == sum(∫(a)dΩ)
+@test sum(∫((id∘b))dΓ) == sum(∫(b)dΓ)
+
 end # module